Inventor

Tetsu Ogawa

Inventor

Ishikawa, JP

Overview

1986–2021

Patent span

Physics

Primary field (CPC G)

Patents· 34 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

G02Fprimary

G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein46%

B60GVehicle suspension arrangements9%

G11BInformation storage based on relative movement between record carrier and transducer9%

G02BOptical elements, systems or apparatus7%

F16FSprings4%

G06FElectric digital data processing4%

H03HImpedance networks, e.g. resonant circuits4%

B62DMotor vehicles2%

C09KMaterials for miscellaneous applications, not provided for elsewhere2%

G03GElectrography2%

PatentTitleYear

10,948,872Process cartridge and image forming apparatus having an electrical contact portion mounted on a projection and electrically connected to a storing portion2021 9,669,680'Alignment adjustment device'2017 9,546,705'Bush'2017 9,278,595'Suspension arm mounting structure'2016 7,871,093'Torsion beam suspension'2011 6,854,723'Elastic bush and method of press-fitting elastic bush'2005 6,661,484'Retardation matching using the liquid crystal twist angle for different color dots within a pixel of a reflective color LCD'2003 6,633,352'Reflection type liquid crystal display device'2003 6,608,659'Reflective liquid crystal display apparatus'2003 6,597,421'Reflective liquid crystal display element and image display device using the same'2003 6,567,149'Reflection liquid crystal display device'2003 6,522,378'Liquid crystal display and manufacture therefore'2003 6,480,251'Reflection liquid crystal display element'2002 6,426,785'Reflective liquid crystal display device'2002 6,404,471'Reflection liquid crystal display'2002 6,300,990'Reflective LCD device with low visual angle dependency and high contrast'2001 6,297,863'Reflective liquid crystal display device'2001 6,278,508'Reflection type liquid crystal display device'2001 6,144,432'Reflective liquid crystal display device'2000 6,130,735'Reflective liquid crystal display device having front scattering films'2000 6,122,027'Liquid crystal display device with color filters between reflector and transparent conductor'2000 6,055,033'Color liquid crystal display device using polymer and polarization films'2000 6,011,605'Liquid crystal display with a metallic reflecting electrode having a two layer film of Ti and Al alloy'2000 5,982,463'Liquid crystal display device capable of displaying color without a color filter'1999 5,757,583'Disc drive having automatic clamp and disc ejection arrangements'1998 5,373,378'Active matrix type liquid crystal display device with peripheral pixel electrodes attached directly to signal lines'1994 5,056,897'Spatial light modulating element and neural network circuit'1991 4,792,920'Interface providing impedance matching by selective connection of a resistor array to a power supply'1988 4,733,314'Disc unit including automatic ejection upon misinsertion detection'1988 4,725,460'Optical filter and the method of preparing the same'1988 4,694,421'Interface system which selectively provides impedance matching between a host computer and a control circuit'1987 4,670,802'System for controlling loading and ejection of recording medium on a disc unit'1987 4,632,514'Color liquid crystal display apparatus'1986 4,628,376'Magnetic disc unit'1986

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1986–2003Patents assigned to MATSUSHITA ELECTRIC INDUSTRIAL CO LTD (22)· patent assignee history

1986–1998Patents assigned to CANON DENSHI KK (6)· patent assignee history

1986–1998Based in Hanazono, JP· patent location history

1986–1991Based in Kyoto, JP· patent location history

1999–2003Based in Ishikawa, JP· patent location history

2000–2003Based in Kanazawa, JP· patent location history

2005–2017Patents assigned to HONDA MOTOR CO LTD (5)· patent assignee history

2005–2017Based in Wako, JP· patent location history

2016Patents assigned to F TECH INC (1)· patent assignee history

2021Patents assigned to CANON KK (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD	22	1986–2003
CANON DENSHI KK	6	1986–1998
HONDA MOTOR CO LTD	5	2005–2017
CANON KK	1	2021
F TECH INC	1	2016

Locations

Location	Patents	Span
Ishikawa, JP	13	1999–2003
Hanazono, JP	6	1986–1998
Kanazawa, JP	5	2000–2003
Wako, JP	4	2005–2017
Kyoto, JP	2	1986–1991